Hygiene key



FIG. 1 is a left top front perspective view of a hygiene key showing mynew design;

FIG. 2 is a right bottom front perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The portions of the hygiene key shown in dotted lines do not constitutea part of the claimed design.

CLAIM The ornamental design for a hygiene key, as shown and described.